CODEWITHSUNDEEP
javaandroidjson
KGillis
KGillis

Reputation: 53

Android Retrieving JSON Object from URL

I am working on an app that makes an API call to a php script that echos a JSON Object. Testing the php file manually through a browser returns the expected information, but my app is acting as if the string that is returned is empty (before I even get to the point of decoding the JSON Object).

Here's the snippet of my code. I've used this script multiple times in my app successfully for api's that echo strings.

String urlParameters = 
    "request=item_search&item_num=" + barcode + "&ou=" + OU + "&user_tag=" + initials + "&version=" + version + "&scan_point=return";
URL url = null;
try {
        if (testMode == true) 
        {
            url = new URL("http://URL/api.php");
        } 
        else 
        {
            url = new URL("http://URL/api.php");
        }
    } 
    catch (MalformedURLException e) 
    {
        e.printStackTrace();
    }
    StringBuilder output = new StringBuilder();
    try 
    {
        assert url != null;
        URLConnection conn = url.openConnection();
        conn.setDoOutput(true);
        OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream());
        writer.write(urlParameters);
        writer.flush();
        writer.close();
        String line;
        BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        while ((line = reader.readLine()) != null)
        {
            output.append(line);
        }
        writer.close();
        reader.close();
    } 
    catch (IOException e) 
    {
        e.printStackTrace();
    }
    String outputString = output.toString();

Upvotes: 1

Views: 326

Answers (1)

Pratik Butani
Pratik Butani

Reputation: 62419

Have you tried OkHttp.

HTTP is the way modern applications network. It’s how we exchange data & media. Doing HTTP efficiently makes your stuff load faster and saves bandwidth.

You can try following code:

package com.squareup.okhttp.guide;

import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;
import java.io.IOException;

public class GetExample {
  OkHttpClient client = new OkHttpClient();

  String run(String url) throws IOException {
    Request request = new Request.Builder()
        .url(url)
        .build();

    Response response = client.newCall(request).execute();
    return response.body().string();
  }

  public static void main(String[] args) throws IOException {
    GetExample example = new GetExample();
    String response = example.run("https://raw.github.com/square/okhttp/master/README.md");
    System.out.println(response);
  }
}

For more you can visit:

Vogella's article

OkHttp 2.0

Upvotes: 2

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